Add to Gas or Diesel Fuel - Add approximately 1 ounce per gallon. One bottle treats a tank, up to 21 gallons. Add directly to fuel tank.
Add to 2-Stroke Fuel - Add 1 ounce per gallon of pre-mixed fuel.
Add to Engine Oil - Add 1 ounce only per quart of engine oil. May be added with oil change or between oil changes.